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How do the spectra of giants, supergiants, and main-sequence stars differ
Evolutionarily Oldest
Refers to the earliest developments in the history of life on Earth or the most ancient traits and behaviors preserved through natural selection.
Cerebral Cortex
The intricate fabric of interconnected neural cells covering the cerebral hemispheres; the body’s ultimate control and information-processing center.
Reticular Formation
A complex network of nerve pathways within the brainstem, involved in controlling alertness and consciousness.
Brainstem
A region at the base of the brain that controls vital functions like breathing, heart rate, and blood pressure.
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